Building on abstract reference models, the Open Geospatial Consor- tium (OGC) has established standards for storing, discovering, and pro- cessing geographical information. These standards act as basis for the im- plementation of specific services and Spatial Data Infrastructures (SDI). Research on geo-semantics plays an increasing role to support complex queries and retrieval across heterogeneous information sources, as well as for service orchestration, semantic translation, and on-the-fly integra- tion. So far, this research targets individual solutions or focuses on the Semantic Web, leaving the integration into SDI aside. What is missing is a shared and transparent Semantic Enablement Layer for Spatial Data Infrastructures which also integrates reasoning services known from the Semantic Web. Instead of developing new semantically enabled services from scratch, we propose to create profiles of existing services that im- plement a transparent mapping between the OGC and the Semantic Web world. Finally, we point out how to combine SDI with linked data.